Home / 12,315.24-16,982.06-11,316.51

Finding the Fourth Proportional to 12,315.24, 16,982.06 and 11,316.51

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Solution

The fourth proportional to 12,315.24, 16,982.06 and 11,316.51 is: 15,604.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.24 : 16,982.06 = 11,316.51 : x
  2. Step 2: Convert to fraction form
    12,315.24/16,982.06 = 11,316.51/x
  3. Step 3: Cross multiply
    12,315.24x = 16,982.06 × 11,316.51
  4. Step 4: Simplify right side
    12,315.24x = 192,177,595.23
  5. Step 5: Solve for x
    x = 192,177,595.23/12,315.24
  6. Step 6: Final answer
    x = 15,604.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.